1372-05-10, Westminster

To the sheriffs of London. Order to set free John Morgan clerk from Neugate prison by mainprise of Master John Bryenne clerk of Devon, William Gledesey and Giles Braybroke of the county (sic) of London ; as lately upon information received that the said John Morgan purposed to depart to foreign parts in order to prosecute many things to the prejudice of the king and crown, the king ordered the sheriffs to cause him to appear before them, and to compel him to find mainpernors . 435 mainpern him that he should not depart nor send thither purpose aforesaid, and if he should refuse, to commit him to prison until he would willingly so do, by virtue of which he is taken by the sheriffs and imprisoned, as appears by of the sheriffs sent into chancery by the king's command ; said John Bryenne, William and Giles appearing in person in have mainperned for him under a pain of 100/. that he shall depart nor send to prosecute or attempt aught that may tend prejudice of the king or crown or to be derogatory to the laws realm.